2.4 BRs Flashcards
1
Q
The elements or compounds produced by a chemical reaction are known as _____
A
products
2
Q
Chemical reactions always involve a change in ____
A
energy
3
Q
The energy that is needed to get a reaction started is called the _____ _____
A
activation energy
4
Q
All enzymes are _____
A
catalysts
5
Q
After a reaction takes place, the enzyme is ____ and ready to accept molecules
A
unchanged
6
Q
_____ speed up chemical reactions that take place in cells
A
Enzymes
7
Q
If reactants don’t have enough energy, they will be ______ after the collision
A
unchanged
8
Q
Elements or compounds that enter into chemical reactions are called _______
A
reactants
9
Q
Enzymes affect the reactions in living cells by changing the _____
A
speed
10
Q
A substance that accelerates the rate of a chemical reaction is a ______
A
catalyst
